EXT2-fs (loop0): warning: mounting ext3 filesystem as ext2
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4340 at fs/inode.c:389 inc_nlink+0x130/0x168 fs/inode.c:389
Modules linked in:
CPU: 1 PID: 4340 Comm: syz.0.53 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : inc_nlink+0x130/0x168 fs/inode.c:389
lr : inc_nlink+0x130/0x168 fs/inode.c:389
sp : ffff80001fce7b80
x29: ffff80001fce7b80 x28: dfff800000000000 x27: 0000000000000000
x26: 1fffe0001bc7202c x25: ffff80001140c908 x24: 0000000000000000
x23: 1fffe0001bc72030 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000de390138 x19: ffff0000de390180 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000111a3970 x15: 0000000000000003
x14: 00000000ffff8000 x13: 00000000d711a970 x12: 0000000000080000
x11: 000000000000ad70 x10: ffff80002089b000 x9 : ffff80000894f000
x8 : 000000000000ad71 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x130/0x168 fs/inode.c:389
 inode_inc_link_count include/linux/fs.h:2497 [inline]
 ext2_mkdir+0x54/0x258 fs/ext2/namei.c:241
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4065
 do_mkdirat+0x1bc/0x508 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 2454
hardirqs last  enabled at (2453): [<ffff80000884d04c>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:231
hardirqs last disabled at (2454): [<ffff80001119f244>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (2412): [<ffff80000819d0d8>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (2412): [<ffff80000819d0d8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:586
softirqs last disabled at (2397): [<ffff80000819d6dc>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (2397): [<ffff80000819d6dc>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (2397): [<ffff80000819d6dc>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (2397): [<ffff80000819d6dc>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:641
---[ end trace 77c2a9b9d7fc60b2 ]---
EXT2-fs (loop0): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 252
netlink: 8 bytes leftover after parsing attributes in process `syz.0.53'.